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C Requires Chilkat v11.6.0+

Get the Last JSON-RPC Response from an MCP Server

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Demonstrates Mcp.GetLastJsonData, which returns the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most recent request into a JsonObject.

Tip: Code to parse the returned JSON can be generated with Chilkat's online tool at https://tools.chilkat.io/jsonParse.

Background. This exposes the full protocol-level response for inspection or debugging after any MCP request.

Chilkat C Downloads

C
#include <C_CkMcp.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMcp mcp;
    HCkJsonObject toolsResult;
    HCkJsonObject json;

    success = FALSE;

    mcp = CkMcp_Create();

    //  Connect to a public MCP (Model Context Protocol) server over its Streamable HTTP endpoint.  The
    //  Microsoft Learn MCP server is public and requires no authentication.
    success = CkMcp_Connect(mcp,"https://learn.microsoft.com/api/mcp");
    if (success == FALSE) {
        printf("%s\n",CkMcp_lastErrorText(mcp));
        CkMcp_Dispose(mcp);
        return;
    }

    //  Perform an MCP request.
    toolsResult = CkJsonObject_Create();
    success = CkMcp_ListTools(mcp,toolsResult);
    if (success == FALSE) {
        printf("%s\n",CkMcp_lastErrorText(mcp));
        CkMcp_Dispose(mcp);
        CkJsonObject_Dispose(toolsResult);
        return;
    }

    //  Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
    //  recent request.
    json = CkJsonObject_Create();
    CkMcp_GetLastJsonData(mcp,json);

    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));
    //  JSON parsing code for this result can be generated at Chilkat's online tool:
    //  https://tools.chilkat.io/jsonParse


    CkMcp_Dispose(mcp);
    CkJsonObject_Dispose(toolsResult);
    CkJsonObject_Dispose(json);

    }